Cap for writing tools



FIG. 1 is a right front perspective view of a cap for writing tools showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view, the left side being a mirror image thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and

FIG. 7 is a right side elevational view thereof, the writing instrument depicted by means of broken lines being for illustrative purposes only and forming no part of the claimed design. 

The ornamental design for a cap for writing tools, as shown and described. 